Chemistry Practice Question and Answer
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Q: What type of indicator is turmeric, litmus paper etc.?
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5f697f86397b1a52908c1013- 1synthesizedfalse
- 2Naturaltrue
- 3Natural and synthesizedfalse
- 4Othersfalse
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Answer : 2. "Natural"
Q: Who proposed the word 'molecule'?
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5f869f7ce5230d6207339745- 1E. Rutherfordfalse
- 2J.J. Thomsonfalse
- 3Democritustrue
- 4John Doltonfalse
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Answer : 3. "Democritus"
Q: Which of the following gases turn lime water milky?
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609e4dcc1679a537e39efa2e- 1Carbon Dioxidetrue
- 2Oxygenfalse
- 3Nitrogenfalse
- 4Hydrogenfalse
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Answer : 1. "Carbon Dioxide "
Q: Which of the following is the conductor of nonmetal electricity?
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5feb069af33a00432afeff9b- 1graphitetrue
- 2Copperfalse
- 3Sulfurfalse
- 4diamondfalse
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Answer : 1. "graphite"
Q: Which of the following non-metals are kept immersed in water?
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61275d63b05363065a006bf3- 1Sulfurfalse
- 2White Phosphorustrue
- 3Red Phosphorusfalse
- 4Iodinefalse
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Answer : 2. "White Phosphorus"
Q: What will be the work done by 3 moles of an ideal gas when it expands spontaneously in vacuum?
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63c922461c47ef334be202d7- 1Zerotrue
- 2Infinitefalse
- 33 joulesfalse
- 49 joulesfalse
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Answer : 1. "Zero "
Q: The tendency to give up electrons is called-
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5f745960a921aa16e68b8a63- 1Oxidationtrue
- 2Reductionfalse
- 3Catalysisfalse
- 4Motivationfalse
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Answer : 1. "Oxidation "
Q: On heating copper powder in air, a layer of copper oxide accumulates on its surface. What is the color of this layer?
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5f697a06f9079a64e3a50c7f- 1Blacktrue
- 2Whitefalse
- 3Yellowfalse
- 4Brownfalse
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Answer : 1. "Black"
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